-
快速不需焊接和再镀锌，安装速度比法兰连接管件快3倍以上。
Quick: Don't need to weld and galvanize, the setting time is 3 times quicker than the flange connect fitting.
youdao
-
快速不需焊接和再镀锌，安装速度比法兰连接管件快3倍以上。
Quick: Don't need to weld and galvanize, the setting time is 3 times quicker than the flange connect fitting.
youdao